<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{this.currentCity}}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div class="button-wrapper"
                 v-for="item of hot"
                 :key="item.id"
                 @click="handleCityClick(item.name)"
            >
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
        <div class="area"
             v-for="(item, key) of cities"
             :key="key"
             :ref="key"
        >
          <div class="title border-topbottom">{{key}}</div>
          <div class="item-list"
               v-for="innerItem of item"
               :key="innerItem.id"
               @click="handleCityClick(innerItem.name)"
          >
            <div class="item border-bottom">{{innerItem.name}}</div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
  import { mapState, mapActions } from 'vuex'
  import Bscroll from 'better-scroll'
  export default {
    name: 'CityList',
    props: {
      hot: Array,
      cities: Object,
      letter: String
    },
    computed: {
      ...mapState(
        {
          currentCity: 'city'
        }
      )
    },
    methods: {
      handleCityClick (city) {
        // this.$store.dispatch('changeCity', city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapActions(['changeCity'])
    },
    mounted () {
      this.scroll = new Bscroll(this.$refs.wrapper)
    },
    watch: {
      letter () {
        if (this.letter) {
          const element = this.$refs[this.letter]
          this.scroll.scrollToElement(element[0])
        }
      }
    }
  }
</script>

<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    overflow hidden
    position absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background #eee
      color #666
      font-size: .26rem
      padding-left: .2rem
    .button-list
      padding: .1rem .6rem .1rem .1rem
      overflow hidden
      .button-wrapper
        float left
        width: 33.33%
        .button
          padding .1rem 0
          margin .1rem
          border .02rem solid #ccc
          text-align: center
    .item-list
      .item
        color #666
        padding-left .2rem
        line-height .76rem
</style>
